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4

1.

Purpose: Flush the impurities and 

silt in the pipe in case of the 

blocking.

2.

Open the protective plastic sheet 

and protective cover Turn on the 

tap and

 

o

pen up the supply valve 

rod to flush the pipe. Close the 

spool and test the

 

pressure 

resistance and tightness to make 

sure there no leakage.

3.

Blocked all outlet of pipes with 

plastic plugs(1/2) and turn on the 

tap.

 

Check

 

whether the 

connection port of the upper of 

the outlet pipe are tight

 

and

 

the 

status of pipeline pressure. Make 

sure there is no leak-age.

4.

After the test of tightness, revet 

the protective plastic sheet and 

protective

 

cover.

Test  of  Water  and  Tightness

3

2

OFF

HOT

COLD

ON

HOT

COLD

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